Abstract: A battery saving electron flow blocking system for controlling the flow of electrons between a pair of batteries removably installed in a device and from between a battery and a conductor. The battery saving electron flow blocking system includes a blocking member comprising a panel movable into a position adjacent to one of the group of the first positive contacts and the first negative contacts in order to isolate the contacts from electrical communication with the conductor of the device. Additionally a track may be provided for guiding movement of the blocking member in the device.